138 niOCEEDINGS OP THE AMERICAN ACADEMY 



Abdomen obovate, broad and about equally rounded at either end, 

 in the middle nearly half as broad again as any other part of the body, 

 in length just about equalling the entire thorax. Abdominal append- 

 ages obscurely seen in a single individual, where they are tolerably 

 stout, tapering slightly, very bluntly terminated, and about as long as 

 the last abdominal segment. 



Legs very short, the tibias being shorter than the width of the thorax, 

 and armed at tip with a pair of short straight spurs ; tarsi not more 

 than half as long as the tibiae, but the separate joints are not deter- 

 minable on any of the specimens. 



Wings four times as long as broad, the middle of the front pair 

 reaching the end of the abdomen, long and very regularly obovate, the 

 only difference in the form of the two extremities being in the gentler 

 tapering of the base, and the straighter course of the costal margin next 

 the base. The basal scale is triangular, about as long as the meso- 

 notum, its costal and outer margins each a very little convex. The 

 scapular vein, its superior branches, and the mediastinal, are stout, 

 while the other veins are very feeble and only appear under favorable 

 jireservation. The submarginal vein * is crowded against the margin, 

 but does not run fairly into it before the end of the basal fifth of the 

 wing. The mediastinal vein terminates a short distance before the 

 middle of the wing. The scapular vein runs at only a short distance 

 from and parallel to the margin, and emits from five to eight superior 

 branches running in an extremely longitudinal course to the costa ; 

 usually the first branch is thrown off almost as far out as the middle 

 of the second quarter of the wing, but where the branches are numer- 

 ous three branches are thrown off before the middle of the wing ; in 

 addition to the superior veins two inferior veins are emitted in the 

 apical third of the wing, and strike the lower margin of the wing just 

 below the apex. The externomedian vein runs subparallel to, but a 

 little divergent from, the scapular, and nearly as far from it as it is 

 from the costal margin, emitting four inferior simple or forked 

 branches which cover the greater part of the hind border with their 

 nervulcs ; from near the middle of the wing a superior branch is also 

 emitted, which is soon lost. The internomedian vein is forked, and 

 strikes the margin near the middle of the basal half. 



Although in the number of branches to the scapular vein the speci- 



* What I licrc cnll the submarginal vein is tlie sliort simple vein, sonietimea 

 I present in, at otlier times absent from Termitina, wliicli i)recedes the medias- 

 tinal vein. Ilagen calls it the first branch of his subcosta. 



